Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
AIIMS2003BotanyAnimal Kingdom

Assertion : Bats and whales are classified as mammals. Reason : Bats and whales have four-chambered heart.

Options

  1. AIf both Assertion and Reason are true and the reason is the correct explanation of the assertion
  2. BIf both Assertion and Reason are true but the reason is not the correct explanation of the assertion
  3. CIf Assertion is true statement but Reason is false
  4. Dif both Assertion and Reason are false statements

Correct answer

B. If both Assertion and Reason are true but the reason is not the correct explanation of the assertion

Step-by-step solution

Bats and whales are classified as mammal because they possess the essential mammalian characteristics like presence of milk gland or mammae, presence of pinnae, viviparous nature, hairs on body, presence of diaphragm etc. Though bats and whales have four chambered heart, it cannot be considered as the main characteristic of being mammals because it is also present in some reptiles (e.g. crocodile) and all birds.

Practice Animal Kingdom on Quantrex Academy →

More from Animal Kingdom

Given below are two statements : Statement I : The class name Reptilia refers to creeping or crawling mode of locomotion. Statement II : All organisms belonging to Reptilia have th 2026Select the incorrect statements from the following : A. Digestive system in Platyhelminthes is incomplete. B. Bilateral symmetry is a characteristic feature of adult Echinoderms. C 2026Which of the following is not a characteristic of chordates ? 2026Match List I with List II : List I List II A. Molluscs I. Pulmonary respiration only B. Reptiles II. Branchial respiration C. Adult amphibians III. Cellular respiration D. Amoeba I 2026A group of researchers procured some fish-like animals and upon investigation the following characters were observed : A. Endoskeleton was made of cartilage. B. Ectoparasitic, as t 2026Select the set of fishes which belong to the class Osteichthyes : 2026The flightless bird with forelimbs modified as paddle-like structures suited for swimming is known as : 2026Given below are two statements : Statement I : When any plane passing through the central axis of the body divides the organism into two identical halves, it is called radial symme 2026 Full Animal Kingdom list All AIIMS PYQs